Dial-moving mechanism for clocks.



J. M. BLANCHARD.

DIAL MOVING MECHANISM FOR CLOCKS. APPLICATION FILED JULY 9, 1914.

1 1 37, 1 82, Patented Apr. 2"), 1915. I

THE NORRIS PETERS 60., PHam-LITHQ, WASHINGTON, D. C.

' so as topreVent resistance due against the dial and nioye awa therefrom when the automatic shift takes place I tofrietion between the two dials.

on the front: face of the mechanism plate 1 and concentric to the shaft supporting the .Idials 85 20 area number oftraeks 21 formed of two parts in projection eonneeted byftWo declivous parts, the distance between thetwo summits "of the slopes corresponding ito the amplitude of the rotary shifting movement tiyelyaeoacting with the aforesaid tnaeksland track; a eak spring :23- arra' nged between the fixed dial 20'anclthe movable; dial 8, as;

sures thisapplioation: At the time 'Whenthe dial shifts the VariOus teeth InQi e"down the slopes onjwhieh each one rests: anol then" -move upthe'opposite slope th'us ea isingthe to 'ino'i e axially, the a'm oiint of said axial movement clepending'on the depth of 7 the inclined-parts ofthetra'cksflFor clocks haying large dials rollers could he provided to e-liminate friction}- it :7 V toasecurefhy Letters Patent; "United What- I 'claim fasflmy invention, and desire a States is zs- Q :1; In dial moving mechanism forcloelgs; the combination of a fixedd'ial, rotary dial v eoa'Xial therewith, means for imparting a erse direction ever'yilfZ 11o1 rs, a"pin on sa id rotary dial, two'pivoted'tappets adapted to, V be resp'eetivelybrougat into positionto pre i Vent movementof said pinandsaiddial'for l and means foroperating. sai pper a rotary movement to'isaid rotary dial' in-afre a: definite period dial moving irieehanisfi tor clocks the combinationof-a fixed dial, a rotary dial 'coaxialftherewith, aeam; rotated 'by the clock mechanism, pi voted and jointed detents coaeting with saideam atone end and V the other ends of; said deten'ts rest5ga1in on operated thereby, rollers mounted on said movable diahpinson'said rollers uponwhieh V a i 9 "said rotary-dial,tvyopivoteditappets atdaptfl ed to be loroi ghtfiinto'position lto'prevent a movement 10:1? 1 said pin, and} said j niovlable and flexible transmission Qineans con;-

- neetingsaid'rollers with saidta pjpets fadaptj" l i red to movesaidtappetsto engage or"1"elease said. pin bythefniovement of saidfletentsi,

7 3. 1111 "ClialefllO Yifig': mechanism fl'elocks the combination-of a fixed dial, arotaiyjdial" coaxial "therewith{1a"-eain rotated by the 'clocl ,me'c 'hanislm' piyoted' and jointed detentsj ooaetmgi with: saidi'eahi atone encl and operated thereby, rollers mea time" "ofi' said;

movabl'ejdialypins on said rol'lershiponwhich f I tlie; other endsjofi saiddetentsgrest; pin: on saidrotary" dial; two pivot ed ed to be brought-into p 7 t ionto -preyent 'Inov'ement oi S ild pjl fl-andstlll nioy ablediala flexible transmission vlrieansl COIHlt1ng sa d rollers Withsaid {tappetsfaclapted' to meve 7' said tappets' to'en' l by the moyernent'bfsaid detents, and means for imparting-axialmovement; t0 saidfi'otary dial so" as"to bringit away fromand hack ward d fixed dial during its m ent 'of-rota-tioni '7 i .G'opies of this patent m ay. be obtained-fqrifive dents each-by addressi hg the Comgnisioner 20f Patents;

70. gagejor releas Said pin In Witness" whereof j ll'have signed this in the presence: oi two yvite 1 JEAllllE iieetiiiinr i isimeinea 

